Generic Claritin contains active moiety Loratadine. It belongs to class of drugs known as antihistaminics.Histamine is a biochemical substance present inside the body which is responsible for producing allergy symptoms like sneezing, hives, watery eyes etc. Generic Claritin is used in treatment of these symptoms. Generic Claritin is prescribed for hay fever, allergic conjunctivitis that results in red itchy eye, eczema, hives, insect bites and stings and any food allergy. This is non-sedating histaminic; so, does not make a person sleepy. It is available in the medical store on prescription. Generic Claritin competes with free histamine which blocks the endogenous histamine to relieve the symptoms of allergy. It has rapid absorption in the body even if it is administered orally.